I have a valve on my primary bucket that I always disasemble and clean after each use, but I never use the valve for fear of contamination. I always use my auto siphon, but I was thinking it would be easy to just attach a hose on the valve and drain to secondary....So when its time to go to secondary should I keep using the auto siphon, or is it possible to really clean and sanitize the valve on the bucket, after primary fermentation is over?